Siloxane azo dyestuffs



t radical, as, for example phenyl.ornaphtliylfradicals or aj'yaln' of at least 3, and prete'rably of from about-31'6" value of from 010' 2.

'duced by diaz otizin'g a primary ammati minebyman w eels v, arm '(n) ihafy ine same ani a substituted aryl radical; as, for example, phenyl or' ",naphthyl radica1s,"-or substituted phenyl or r naphthyl radicals containing substituents on the aryl ring'suchfas a lower allryl-, alkoxy-, Ilitl'07, halogen-, or'sulfo-radicals; f

5 atom is-.zopen and reactive;

'alkylsilanes suitable as coupling components in this in- 7 t p vention, and processes for then-production, are the subz,92s,s1s 5 YSILOXANE'AZO DYESTUFFS" v5 Donald L. Bailey, Snyder, and Ronald Mr minim-.1 7 Island, N.Y., assignors .to Union Carbide Corporation,

No. 615,463, filed October 12, 1956."

duced by reacting an arylamine with an haloalkylsilane or an aminoalkylsilane as represented-by the followin C a corp ra ion O New York V V general equation:

V NoDrawing. ApplicationApril'29, 1957 v m 2 7 2 L.

. q e 5 Serial No. 655,508 5 1 v 1 Yh J wherein Ar X, V, Y, (a) and (n) have the same meanings as hereinbefore indicated; and Z represents a halogen r 7 atom or an amino radical. For example, the reaction of This invention relates to silicon containing dyestufis as 15 Eamma-CIIIOYOPTOPyltfiethoxysilafle t -m y inew compositions of matter and to processes for produca 11116 at about under 311111611 g phfl'? m them. More particularly this invention is concerned p o e yl n y y p py withlpolysiloxane azo dyestufis. lme.- V j siloxane azo d t ff f h present: invention The production of the slloxane azo dyestuffs of this 1ncontain the unit represented by the following general 20 z'i can be Illustrated y thQfOHOWmg n l il formula:' '1

R rePrQsems an ally} i a maisufigflgd my! sa irmea ings as 'h reinbef ore indicated.

substituted phenyl 1 {Jean eru da co p n m onent iinter aliafi Z g'ammairie'thoxysilylpropyl) aniline, v N-m lhy -(g FI I 9 Y .Y P i0PY )-a 1 N;N+di=(gamfia-triethoxysilylpfopyl)j-anilin fN-(gamma triethonysilylpropyl)Fl-naphthylamine, JN-(gamma-triethoxysilylpropyl) 2 njethoxyaniline, I m art e y p py )-2; chloroanilin ,i j N-('gamma-triethoxysilylpropyl) 3-nitroaniline, it

about The substituents on; the Ar -group can belower rieth gy y p pyl)r1- p y i 6-s f'ji y r a yr dica s, a i a i en. 7' i V atoms siulforadicals,and the like. 'N (gamma-methyldiethoxysllylpropyl)-an1l1ne,

The iiovel siloXane azoi d esmIrsL'herein'disdbsed an; 40 -(s m -p ny le hqxy ily p ny ii fl 'yl claimed contain the unit represented by the following; anilifle,

" a in bylprocediires well'knownk radical such asfphenyl;

.The valuablev dyestuffs inyentionf can be' rp ro ods knownrin dyestufl 'technology, as for'example; bythe ofjthr primary aromatic amine-Lin dilutiejdquebus hydrw Carboxyl;:acylaniino,1. arylazo, sulfo, 'andilike radicals;

ing the produced diaz'oniu'm salt with a functional a'rylaminoalkylsilane which can be'represented by the general formula: v V 1 y I 1 'from?ibenzidine; dianisidineg 4,4diaminbstilb ene-2,2.-di-

anilide; 'it-I is possibleto 'couple'both diaz'on'ium groups e: other diazonium [group with hereinbeiore dia ;,,A repr ts n a yl t di' vi e a pse' th ir iyention maybernentionedp Aminobenzene,

. ;1-aminobenz'ene 3 sulfonic acidleanririobenieneksulforiid-acid, i

n the preparationfof diazonium sal andY represents an alkoxyfradicalor an 'aryloxy radical; and wherein the position paraato; the"amino5nitr9gen Pa tented Feb 16;-1960 I ject matter of our copending patent application, Serial ,These functional arylaminoalkylsilanes can be pro 7 lllustrativeofgthe functional arylaminoalkylsilanesthat f;

' invention'are' Y N-(gamma-phenoxydiethoirysilylprom l)aniline,and ,7

i .The amino compounds suitableforause as s'tartingx-ina-v v terials in thie production of thediazonium saltswhicli V can bejuse d linthislinvention are the'substituted a'ncl 5 substituted primary larylraminefswhich-can:be'diaaotized 9 I artiillllustrativearejthe fprinjary'naonoaniines of -'theiebeiiiene,j naphthalene,Jot 5 fanthfaquinone seriesfthemonoamims ofithe aminoazo v 5 fdyes'tuifs; orf thediamines'ofqtlie benzene,bnaphthalene', @or' bip'henyl'eiie;series}.:Thesnbstituentsonthe-primary J i amine mam talkyljalkoxy aryl, aryloxy, aralkyl,ialkyl= 1 addition of sodium nitrite solution to a chilled mixtur 5 5 1 aH-g;,Si-=),'ha1og 'hydroxyli sulfamidoinitm sulfonic acid; 4, 4' diaminostilbene or 4;4+d iaminoben z-- .two' jmoles oian ariylaminoalkylsilane orito couple} Lv l 'f s tl'ieitetrazowithone mo1e;of-an v Pf thieammo. QmP u s.-: which can" ii 7 suitable for Z-arhinonaphthalene-S,7-disulfonic :acid,"

'l-aminobenzene-Z-carboxylic acid, l-aminobenzene-3-carboxylic acid, 1-aminobenzene-4-carboxylic acid, l-amino-Z-methylbenzene, -1--amino-3-methylbenzene, -l--amino-4-methylbenzene, 1-amino-4-phenylbenzene, 1-amino-2,4-dimethylbenzene, '1-amino-2,5-dimethylbenzene, l-amino-4-nitrobenzene, l-amino-Z-chlorobenzene, 1-arnino-4-chlorobenzene, 1-amino-2,5-dichlorobenzene, 1-arnino-2,5-dichlorobenzene-4-sulfonic acid, 1,4-diarninobenzene-3-sul fonic acid, 1,4-diaminobenzene-3-carboxylic acid, 4-acetylamino-l-aminobenzene, 4-carbethoXyamino-1-aminobenzene, 4-benzoylamino-l-aminobenzene, 4-amino-1,1'-azobenzene, l,4-diarnino-l,1-azobenzene, 4-amino-4-hydroXy-1,l'-azobenzene-3 '-carboXylic acid, 4 amino 4 hydroxy 1,1 azobeuzene 3' carboxy: 5'-'sulfonic acid, 1-amin0-4-hydroXybenzene-3-carhoxylic acid, 1-amino-4-hydroxybenzene-3-carboxylic acid-S-sulfonic acid, 4,4'-diaminodiphenyl, 7 3,3-dimethyl-4,4' diaminodiphenyl, 3,3'-dirnethoXy-4,4'-diaminodiphenyl, 3,3'-dichl0ro 4,4'-diaminodiphenyl, v 4,4-diaminodiphenyl-3-sulfonic acid, I 1, 4,4'-diaminodiphenyl-3,Qfldisulfonic acid, 4,4-diaminodiphenyl=3,3'Zdicarboxylicacid,', l-amino-A(4wamino+benzoylamino) benzene, 4,4'-diaminodiphenylurea, f f 1 4,4'-diaminostilbene-2,2'-disulfonic aci d, 4,4'-diarninodiphenylan1ine, 4,4' diarninodiphenylmethane, 4,4'-diarninodiphenylsulfone, f 1 -('4'-arninopheny1) -3 -methyl-5-pyrazolbne, l- 3 -aminophenyl) -3 -methyl-S -pyrazolone, Z-aminonaphthalene, l-aminonaplithalene-S-sulfonic acid, 1aminonaphthaleneJ-sulfonic acid, 2-aminonaphthalene-6-sulfonic acid, 2-aminonaphthalene-3,6-disulfonic acid, 2-aminonaphthalene-4,8-disulfonic acid,

gamma-4-aminophenylpropyltriinethylsilane, the; like. This enumeration illustrates the wide variety of diazoi tizable aromatic primary amines which can beh ejd'and we do not intend this list to be limitative thereof. The shades of thevdyestufls obtained vary from yellows to the primary aromatic amine is diazotized and the diazonium salt is then slowly added to a cooled mixture of the arylaminoalkylsilane to produce the dyestufl; or the arylaminoalkylsilane may be added to the diazonium salt.

. In all instances coupling will occur in the position para to the amino nitrogen atom of the arylaminoalkylsilane; and when the coupling is carried out in the presence of water, hydrolysis occurs and siloxanes are formed.

When the coupling reaction is carried out under substantially anhydrous conditions, for exarn gile, in the presence of organic solvents such as dioxane, glacial acetic acid, dimethyl-formamide, ethylene glycol, and the like,

K there is produced a functional silanedyestufi. This dyedyestufi represented 'by the structural formula:

oranges, blues,,greys and browns; and the color of the 1 dyestufi produced varies according to the particular components selected, as is well known in dyestufi technology.

The new dyestuffs are made'by methods knownlto be suitable for the manufacture of dyestufis. For example,

was produced by diazotizing p-nitroaniline under anhydrous conditions and then coupling with N-methyl-N- (gamma=triethoxysilylpr0pyl) -aniline in glacial acetic acid medium. The functional dyestufi can then be hydrolyzed by adding it to water and, if necessary, heating. The polysiloxane dyestuff so produced contains units which can be represented by the structural formula:

application;

j'lihe polysiloxane dyestuffs of this invention are stantiv'e to natural fibers, such as silk, wool and cotton;

and also to'the synthetic fibers such"as nylon, ,Dyne'l, Acrilan, acetate and viscose. In addition the dyestulfs of this invention are characterized by the very useful property of being capable of dyeing. glass' cloth and silica froman aqueous dyebath solution. These dyeings have good wash fastness and other properties. It has been found that .these polysiloxane dyestuffs impart some water-repellancy to the natural fibers dyed therewith.

The dyestuffs of this invention are soluble in weakly basic mixtures of water and organic solvents such as alcohols, dioxane, dimethyl-formamide and pyridine; in

pension, attemperatures above about 30 0, preferably at the boilingpoint ofthejidyebath. r v

, 'Ifheqpolysiloxane dyestuffs of this invention contain the unit represented by-the general formula:

when a trifunctional arylaminoalkylsilane is employed as coupling component;and the. unit represented ,by the formula? employed as coupling component; while the disilbx'ane is obtainedfwhenthe coupling component is .a'inonofunctidnal arylaminoalkylene silan'e.

It is also possibte teaseisrjsamsieiaye ps ave grou a gsmfi fi ns nits r se y. he g neral fo m .QSIJ'I; I v

q kThe' metal complexes of gthe polysiloxane dyestufis of Diazotized 4.7 g. of sulfam'lic acid in the usual manner. I

7 To thisdi'azoat Ofto 5 C. there was added'a solution of this invention can also bep'roduced.=; For example, the I first diazo group of dianisidine tetrazo can be coupled with one mole of an arylaminoalkylsilane and then the second diazo groupcan be coupled with I-hydroxy-8- et am aq zap a c- ,6: is 1 ni ac and e d stufi so'obtained'can. then be metallized by procedures well known in'the dyestulij industry. Metallized dyes Scan also be obtained by couplinga diazoniumssalt havs. a rnet ll z ou 'th t e .diamn r up 'withan arylarninoalkylsilane which has a metallizable 7 group ortho'to theajzdlinkage which is formed and then metallizingthe dye so obtained with a salt of 'Cr, Mr, Fe, Co, Ni, Cu, Cd,'Pb, Sn, Zn, and the like.

examples:

v EXAMPLEI v Aniline (9.3 g;) was diazotizediin the usual manner. To this aqueous diazo solution there was slowly added The invention is firrtheriillustratejd the appended 30.7- g. of N-methyl-N-(gamma-triethoxysilylpropyl)9 aniline at 0? to 5,C. while'stirring. .The coupling was stirred overnight at about 5? vC.Land then' allowed to come toroom temperature The deep .red silicon coritaining dye which had separated out was isolated and dried-at 65 C. in a vacuum. oven. Yield was 10.6 g.;

the: formula:

the polysiloxane dyestuflE, which can be represented by of 2.05 g. of sodium acetate :in" 12.5 ml. of water-was added. Stirred themixture overnight-lath toj5l C. and then added another similar portion of, sodium' ,aceltate solution and-let the reaction mixture come toroom temperature slowly. Neutralizedl to pI-Iof'about7' with dilute sodiuinhydroxide, as indicated on Universal Indi-' icatorpaper. A'Ihe deep redfsilic'on containingpolymeric dyestufi," which can be represented by the formula;

wasrisclat n drkit-W Q: ii-a swe t Yield was 14.3 V

' EXAMPLES a added.;1() potassium hydroriideQsolutionto a pH: of

about 7 as indicated ori'Univer'sal' indicator paper and stirred for another six hours at O C. let stand at room temperature and then filtered to recover thered 'polymericsilicon containing dyestufi, which'can be repre-v sented by the formula:"

. Dried in a vacuum oven at'6 5 C." Yield was 3.6 g.

7.7 of N-methyl-N-('gamma-triethoxysilylpropyl) aniline in 5 ml. of ice and 3.5 ml. of Baum hydrochloric acid; A red polymeric dyestufl, which can be represented by the formula: I

formed Added'a solution of 5 g. of hydroxide in 12.5 mlgof water at 0 ,C. and after V2 hour the red polysiloxane dyestufl was filtered off; The

dyestufi was dissolvedin 50 ml. of a methanol by the slow addition of hydrochlorica'cid and the solution was V was insoluble in distilled water and slightly i soluble s a jend meae m v was'f diazotiied intlie usual .6.- manner. To this aqueous-dia'zoftherefwas slowly added f I 15 34 g.;, of .N-methyhN-(gamma trietlioxysilylpropyl)- V n anilinejat about 5"C;;' with stirring." The coupling was stirred"l% hours-ab 0 to 5- Ct and: then a solution -5;

filtered to remove insoluble impurities. solution of sodium hydroxide to precipitate the polymeric siloxane dye'stuflf. The recrystallization was repeated once Added a 10% again rand-the dyestufi was then dried in a vacuum oven at '6 5 C. for 1 hour. Yield of purified product was 2.7 g.

I EXAMPLE 5 Diazotized 7.6 g.;of 2-aminonaphthalene-6,8-disulfonie acid, in the, usual'manner. This was coupled with 7.7 g. of N-methyl-N-(gamma-triethoxysilylpropyl) -aniline in the same manner as described in Example 4. After is0.-

lation the bluish-red polymeric dyestuif, which can be represented by the: formula:

i v N N-O-NQHih-SiO and filtered'toiremove insolubles. 1 The filtrate I was-peutralizedwith dilute hydrochlorieacidto precipitate thejdy'est'uif;whicliiw "filtered oft 'and, washed ,on ithe' first with water and: then with methanol. 1 Dr-ied uwrwenat 0? for 1 1cm i d-Wes Diazotized 3.52 g.- of l-amino-8 hydroxynaphthalene 3,6-disulfonicacid (H acid) in the usual manner; This was coupled with 3 g. of N-methyl-N-(gamma-triethoxysilylpropyD-aniline in the same manner aisdescribed in I I i 7 t V V 0 *Diazotized 1.37- 'g; of p-aminobenzoic acidin the usual manner'atOP (3.. Then, while stirring,'slowly added 3.11 g. jof N-methyl-N-(gamma-triethoxysilylpropyl) aniline g at about 010 5 C. and continued stirring'foran additional 1% hours after addition was complete. At'0 C.

Example 4." After isolation ,the purple colored solid polymeric siloxane dyestufl, which can be represented by the formula:

i was iiis sm ed ifij ioo ha. i of 5% pmlass um hydroxide id 65 the solution was filtered to. remove insolubles. ,Repreeipi- 1 tated by acidification of the filtrate with 20 Baum hydrochloric facid. [The precipitated siloxane 'dyestufi was filtered anddried in a va'cuumoven at 55 'C. tor- 7 hours;

wading hydroxide j siloxane dyestufi, which can be represented by the formula:

H: e a

HOgS- 30:11

was 2.3 g. This was dissolved in 100 ml. of potassium hydroxide solution and filtered. The siloxane dy'cstutf was reprecipitated by the addition of hydrochloric acid to a pH of about 7 as indicated on Universal indicator paper. After drying in a vacuum, Oven at 55 C for about 8 hours the purified polymeric siloxane dyestufiweighed 1.5 g. 7

EXAMPLE 8 One gram of the dyestuff according to Example 1 was dissolved in 75 ml. of water, 25' ml. of ethanol, 0.45ml. of a 5% sodium hydroxide solution and 1 g. of vinyl triethoxysilane. Then immersed a 4 inch square piece of cotton cloth into the dyebath and heated to about 90 to 95 C. with frequent movement of .the material. After about 5 minutes, the dyed cotton cloth was removed from the dyebath. Dye take-up was excellent. dyed cotton cloth was washed with water and then methanol and it was then air dried at room temperature and then at 125 C. for 20 minutes. It showed good wash fastness properties.

Dyeing was repeated, using the same technique, on different cloths and also with various other dyes. The results are tabulated in Table A.

E indicates good to excellent dye take-up by the substrate. 1? indicates poor dye take-up.

What is claimed is: 1. Polyslloxane azo dyestufis containing units represented by the general formula:

aHi a-Si 0 t wherein R represents a member selected from the group consisting of aryl radicals and substituted aryl radicals; Ar represents a member selected from the group consisting of arylene radicals and substituted arylene radicals; X represents a member selected from the group consisting of a hydrogen atom and an alkyl radical; V represents a member selected from the group consisting of alkyl radicals and aryl radicals; (n) is an integer having a e value of from 0 to 2, and (a) is an integer having a value of at least 3. Y

2. Polysiloxane azo dyestuffs containing units represented by the general formula:

wherein R represents a member selected from the group flee e 3 a yl. radisals and ubstitu ed aryl rasiise s;

The yellow 8 epre e t a em er se ec e om the stoun c ns stin o ar n ad a s and subs u d a y ne a icals; X represents a member selected from the group consisting of a hydrogen atom and an alkyl radical; and (a) is an integer having a value of atleast 3.

3. Polysiloxane azo. dyestuffs containing units represented by the general formula:

wherein R represents a member selected from the group consisting of aryl radicals and substituted aryl radicals; Ar represents a member selected from the group consisting of arylene radicals and substituted arylene radicals; X represents a member selected from the group consisting of a hydrogen atom and an alkyl radical; V represents a member selected from the group consisting of alkyl radicals and aryl radicals; and (a) is in integer having a value of atleast 3.

5. Dyestufis containing units represented by the general formula:

r fiw ta ine units re ented bythe general formula: e e

ooorrfl r p I 1113' V 00111.. .N=N -.-.0Hlomomsro 7. Dyestuffs containing units represented by the general formula:

D e o i i un r pr sente by the e er formula:

0H: OC HF I HOaSON= Orr-emomomsro 9. Dyestuffs containing units represented by the general formula:

10. Dyestufis containing-units represented the eral formula:

SQaH

Hols

' 11. Dyestuffs, containing units represented by the general formula: I 1 a S aH CH: 0on1; I

12. Dyestuffs containing units represented-by the gen eral formula: r I 1; 1: 5 a 1:

. i 13 Dyestuffs containing units represented by the gen eral formula:

. V "CH3 14. The method of dyeing fibrous material, whichcom prises exposing said fibrous material to a dye bath' containing a siloxane azo dyestutf containing units whichcan be representedby 'the general formulae wherein R represents a member selected from the groupconsisting of aryl radicals and substituted aryl radicals;

p 17. Process for producing siloxaneazo dyestuffs which 3 comprises thersteps ofproducing a functional silane azo dyestufli under substantially anhydrous conditions and further comprising hydrolyzing said silane-dyestulf in aqueous medium to produce said siloxaneazo dyestufi.

, 1'8.-Si1ica dyed with the polysiloxane azo'dyestufis of claim 1. Y z

7 References Cited in the file of this patent v UNITED STATES PATENTS V 2,317,965 Bestian Apr. 27,; 1943 2,715,133 Speier =Aug;;9, 1955?" 2,162,823 Speier- Dec. 17, '1956 2,778,746 Steinman Jan. '22, 1957 2,832,754 Jex Apr. 29, 1958 1958 b fackett at the bottom, for "3/2" read 1/2 (SEAL) I UNITED STATES PATENT OFFICE February 16, 1960 Donald L. Bailey et a1.

It is hereby certified that erroifa ppears in the printed specification of the above numbered patent requiring correction and that the said Letters Patent should read as. cor- 'rected below.

Coluum 4, line 72; in the formula before the closing Sighed and sealed this 16th day of August 1960.

' KARL-H, AXLINE ROBERT c. WATSON Attesting; Officer Comissioner of Patents j CERTIFICATE OF CORRECTION Patent No. 2325,,313 I 

14. THE METHOD OF DYEING FIBROUS MATERIAL, WHICH COMPRISES EXPOSING SAID FIBROUS MATERIAL TO A DYE BATH CONTAINING A SILOXANE AZO DYESTUFF CONTAINING UNITS WHICH CAN BE REPRESENTED BY THE GENERAL FORMULA: 